Hacker Trends › “blue light” trend

How “blue light” trended on Hacker News

“Blue light” was mentioned 8,108 times on Hacker News between 2007 and 2026, peaking in Jul 2018 with 185 that month.

Every month from 2007 to 2026, counting how often “blue light” appears in Hacker News stories and comments. Each point is a live date-histogram over ~45M items, computed with Upstash Redis Search.

Top Hacker News stories about “blue light”

1. 1.Chemists discover how blue light speeds blindness 851 points · 332 comments · 2018 · discuss on HN
2. 2.Blue light from monitors no danger to eyes or sleep 376 points · 241 comments · 2021 · discuss on HN
3. 3.Fixing annoying blue standby lights 338 points · 247 comments · 2024 · discuss on HN
4. 4.Blue light may not be as disruptive to sleep patterns as thought: mouse study 323 points · 162 comments · 2019 · discuss on HN
5. 5.Hungry men exposed to blue light are sensitive to Earth's magnetic field (2019) 170 points · 90 comments · 2021 · discuss on HN
6. 6.Ask HN: All startup websites look the same 165 points · 82 comments · 2010 · discuss on HN
7. 7.The cold blue light of modern touchscreens poses health problems 146 points · 88 comments · 2018 · discuss on HN
8. 8.Removing yellow stains from fabric with blue light 145 points · 82 comments · 2025 · discuss on HN
9. 9.Daily blue light shortens lifespan, causes brain neurodegeneration in Drosophila 123 points · 85 comments · 2019 · discuss on HN
10. 10.How Blue Lights on Train Platforms Combat Tokyo’s Suicide Epidemic 102 points · 100 comments · 2015 · discuss on HN
11. 11.There’s a lot to learn about how blue light affects our eyes 101 points · 25 comments · 2019 · discuss on HN
12. 12.Show HN: I made an app to help insomniacs learn how to sleep again 94 points · 72 comments · 2022 · discuss on HN

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